8(x-y)平方(x+y)-6(y-x)三次方

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 16:01:54
8(x-y)平方(x+y)-6(y-x)三次方
x)xBΧ;7?qùJ Ɏgk%mIԡ_`gC-@jťF@f@u`ck[ 5fp#$5&U`XL&&ƕXAm >sH-B pm3l!ߝH0 7=x:{BVo`@W&

8(x-y)平方(x+y)-6(y-x)三次方
8(x-y)平方(x+y)-6(y-x)三次方

8(x-y)平方(x+y)-6(y-x)三次方
8(x-y)²(x+y)-6(y-x)³
=8(x-y)²(x+y)+6(x-y)³
=2(x-y)²[4(x+y)+3(x-y)]
=2(x-y)²(4x+4y+3x-3y)
=2(x-y)²(7x+y)

8(x-y)平方(x+y)-6(y-x)三次方
=8(x-y)²(x+y)+6(x-y)³
=2(x-y)²(4x+4y+3x-3y)
=2(x-y)²(7x+y)

8(x-y)²(x+y)-6(y-x)³.........因为(x-y)³=-(y-x)³
=8(x-y)²(x+y)+6(x-y)³
=2(x-y)²[4(x+y)+3(x-y)]
=2(x-y)²(7x+y)